Label Printer Control Using Leading Label Size Verification
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Solution Overview
Problem
Existing printing apparatuses fail to account for RFID tags with failed data writing, leading to labels being peeled off, causing mismatched sizes that can disrupt printing and result in stopped operations.
Innovation Solution
A printing apparatus with a transport unit, label end detection, and a control unit that determines label size before printing, stopping transport when mismatches are detected to prevent printing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If label size determination processing is performed on all labels, then printing accuracy is improved, but processing time increases and productivity decreases
Solution Approach 1:
The system performs label size determination processing only on the leading label before printing, establishing size verification in advance. This preliminary action ensures printing accuracy for the first label while avoiding redundant verification on subsequent labels, thereby maintaining productivity.
Solution Approach 2:
Once the leading label size is verified, the system continues printing on subsequent labels without interruption or additional size determination processing. This continuous operation maintains high throughput while ensuring quality through the initial verification.
2Productivity
If label size determination processing is skipped for subsequent labels, then productivity is improved, but printing reliability deteriorates
Solution Approach 1:
The system performs size verification on the leading label in advance, ensuring that all subsequent labels meet size requirements before printing begins. This preliminary verification establishes reliability for the entire printing run without requiring continuous checks that would reduce productivity.
Solution Approach 2:
The label end detection unit provides feedback on label size for the leading label, enabling the control unit to determine whether to proceed with printing. This feedback mechanism ensures reliability by verifying size compliance before committing to the printing process.
3Manufacturing precision
If transport is stopped when label size mismatch is detected, then printing quality is improved, but processing time increases
Solution Approach 1:
The system detects and stops transport when a label size mismatch is detected on the leading label, preventing printing errors before they occur. This preliminary detection avoids the greater time loss that would result from printing errors and subsequent rework or machine interruptions.
Solution Approach 2:
The transport stoppage, which initially appears as a time loss, actually prevents more significant disruptions by catching size mismatches early. The brief pause converts a potential major printing error into a minimal interruption, improving overall efficiency.
Data Source
AI summary
A printing apparatus includes a control unit configured to perform, after a print request received from an external device is received, based on a detection result of a label end detection unit, a label size determination processing of determining, for a leading label on which an image based on image data included in the print request is printed first, whether a size of the leading label matches a set size set in the print request or not, wherein the control unit, when it is determined by the label size determination processing that the size of the leading label does not match, causes the transport unit to stop transport, and when it is determined by the label size determination processing that the size of the leading label matches the set size, does not perform the label size determination processing on a label subsequent to the leading label.